Hexachlorobutadiene from China
Hexachlorobutadiene (C4Cl6) is a fully chlorinated saturated acyclic hydrocarbon derivative of butadiene. Despite its name suggesting unsaturation, commercial forms are saturated perchlorobutanes under HTS 2903.19.60. Used as heat transfer fluid and rubber extender.
Duty Rate — China → United States
43%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Confirm saturation status via hydrogenation analysis if unsaturated impurities present
• Include Stockholm Convention documentation for persistent organic pollutant status
• Use UN 2279 packaging for toxic liquid with high density (1.55 g/mL)